chore: add Response wrapper

Author: thefeqy

src/Support/GrokResponse.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace GrokPHP\Laravel\Support;
+
+class GrokResponse implements \JsonSerializable
+{
+    private array $response;
+
+    public function __construct(array $response)
+    {
+        $this->response = $response;
+    }
+
+    /**
+     * Get the full API response.
+     */
+    public function full(): array
+    {
+        return $this->response;
+    }
+
+    /**
+     * Get only the assistant's message content.
+     */
+    public function content(): string
+    {
+        return $this->response['choices'][0]['message']['content'] ?? 'No response received.';
+    }
+
+    /**
+     * Get the usage statistics for the API response.
+     */
+    public function usage(): array
+    {
+        return $this->response['usage'] ?? [];
+    }
+
+    /**
+     * Allow the GrokResponse object to be serialized to JSON.
+     * @return array
+     */
+    public function jsonSerialize(): array
+    {
+        return $this->response;
+    }
+}